Home / 20,887.44-31,331.20-9,786.04

Finding the Fourth Proportional to 20,887.44, 31,331.20 and 9,786.04

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Solution

The fourth proportional to 20,887.44, 31,331.20 and 9,786.04 is: 14,679.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.44 : 31,331.20 = 9,786.04 : x
  2. Step 2: Convert to fraction form
    20,887.44/31,331.20 = 9,786.04/x
  3. Step 3: Cross multiply
    20,887.44x = 31,331.20 × 9,786.04
  4. Step 4: Simplify right side
    20,887.44x = 306,608,376.45
  5. Step 5: Solve for x
    x = 306,608,376.45/20,887.44
  6. Step 6: Final answer
    x = 14,679.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.